I want to be able to customize count SQL or custom Numbers before reading the data

Question

I want to be able to customize count SQL or custom Numbers before reading the data

Tinker666 opened this issue 5 years ago · 1 comments

Select count(0) from (: SQL) t1 occurs before the start of the read.Under mysql innodb, SQL execution can be very slow.If I could predict the number of rows before reading, I would not be able to execute the SQL.So I wanted to add configuration for custom data volumes.

Answer 1 · 2020-08-13T04:47:41.000Z

I think this is related to this #305 and unfortunately looking at the dates of both issues, I don't see that is going to happen any time soon